fix: properly applying `total_score` to the final node

app.py

@@ -396,7 +396,7 @@ def generate_beams(n_beams, start_sentence, scores, length_penalty, decoded_sequ
                 children={},
                 current_sequence=current_sequence,
                 cumulative_score=cumulative_score,
-                total_score=cumulative_score / (step + 1 ** length_penalty),
+                total_score=cumulative_score / ((step + 1) ** length_penalty),
                 children_score_divider=((step + 2) ** length_penalty),
                 is_final=is_final,
                 is_selected_sequence=(